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8b5eb68238
They can be close()d explicitly with close-file-descriptor, and will close() on gc, but only explicitly closing the last port on them will close the fileno. Notably needed for network sockets where we open separate input and output ports on the same socket.
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* env.c -- SRFI-98 environment interface */
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/* Copyright (c) 2009-2012 Alex Shinn. All rights reserved. */
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/* BSD-style license: http://synthcode.com/license.txt */
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#ifdef __APPLE__
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#include <crt_externs.h>
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#define environ (*_NSGetEnviron())
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#else
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#ifndef PLAN9
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extern char **environ;
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#endif
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#endif
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#include <chibi/eval.h>
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sexp sexp_get_environment_variable (sexp ctx, sexp self, sexp_sint_t n, sexp str) {
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char *cstr;
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if (! sexp_stringp(str))
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return sexp_type_exception(ctx, self, SEXP_STRING, str);
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cstr = getenv(sexp_string_data(str));
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return cstr ? sexp_c_string(ctx, cstr, -1) : SEXP_FALSE;
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}
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sexp sexp_get_environment_variables (sexp ctx, sexp self, sexp_sint_t n) {
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int i;
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char **env, *cname, *cval;
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sexp_gc_var3(res, name, val);
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sexp_gc_preserve3(ctx, res, name, val);
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res = SEXP_NULL;
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#ifndef PLAN9
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env = environ;
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for (i=0; env[i]; i++) {
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cname = env[i];
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cval = strchr(cname, '=');
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if (cval) {
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name = sexp_c_string(ctx, cname, cval-cname);
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val = sexp_c_string(ctx, cval+1, -1);
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val = sexp_cons(ctx, name, val);
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res = sexp_cons(ctx, val, res);
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}
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}
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#endif
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sexp_gc_release3(ctx);
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return res;
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}
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sexp sexp_init_library (sexp ctx, sexp self, sexp_sint_t n, sexp env, const char* version, sexp_abi_identifier_t abi) {
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if (!(sexp_version_compatible(ctx, version, sexp_version)
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&& sexp_abi_compatible(ctx, abi, SEXP_ABI_IDENTIFIER)))
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return SEXP_ABI_ERROR;
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sexp_define_foreign(ctx, env, "get-environment-variable", 1, sexp_get_environment_variable);
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sexp_define_foreign(ctx, env, "get-environment-variables", 0, sexp_get_environment_variables);
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return SEXP_VOID;
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}
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